Castalia, OH -- U.S. village in Ohio Population (2000): 935 Housing Units (2000): 380 Land area (2000): 1.043989 sq. miles (2.703918 sq. km) Water area (2000): 0.006285 sq. miles (0.016278 sq. km) Total area (2000): 1.050274 sq. miles (2.720196 sq. km) FIPS code: 12476 Located within: Ohio (OH), FIPS 39 Location: 41.399805 N, 82.807176 W ZIP Codes (1990): 44824 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Castalia, OH Castalia